Onii-chan wa Oshimai!
Also known as ONIMAI: I'm Now Your Sister!
Nekotoufu
- Mangaka
- Nekotoufu
- First published
- 2017
- Status
- Ongoing
- Original language
- Japanese
- Genres
- Genderswap · Comedy · School Life · Web Comic
- Content rating
- Safe
Where to find one
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Where it came from
Onii-chan wa Oshimai!, also known as Onimai: I'm Now Your Sister!, originated as a self-published webcomic series by the artist Nekotoufu. The narrative follows Mahiro Oyama, a shut-in who awakens one morning to find he has been transformed into a girl due to a drug administered by his younger sister, Miharu. This gender-bender comedy explores the ensuing domestic mishaps and the protagonist's gradual social integration, drawing from established tropes within the slice-of-life and comedy genres.
The series transitioned into a formal publication under the Ichijinsha imprint starting in 2018, gaining significant traction for its detailed character designs and lighthearted approach to its premise. Nekotoufu’s artistic style, characterized by soft linework and expressive character features, was instrumental in the series' success. Its reception has been largely positive among fans of character-driven comedy, eventually leading to a television anime adaptation that brought the story's visual style to a broader audience.
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About Onii-chan wa Oshimai!
Onii-chan wa Oshimai! is a series in the Manga catalog on collecto.rs. Nekotoufu. Catalog data is sourced from MangaDex. No public series collectors track this one yet — adding yours would make you the first on collecto.rs.
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